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Fog strongly perturbs the aviation, marine and land transportation, leading to human losses and high financial costs. Accurate forecastings of fogs are thus required to reduce their impacts on human activities. However there are still many unknowns in the physical mechanisms driving fog variability

DEUFI project should end-up with improved urban flood simulation methods capable of (i) estimating the flow intrusion within built-up areas, (ii) evaluating the spatial distribution of human exposure and material damage and (iii) proposing best-practice recommendations, in relation with the citizen

The main scientific objectives of the project are: O1 : Characterizing deposition and erosion of fine sediments at the bed surface of alpine rivers O2 : Assessing the exchanges of fine sediments between flow and bed (infiltration, exfiltration) O3 : Understanding the spatial and temporal varia

Whilst climate impacts from volcanic sulfur have been intensively studied the scientific community only now begins to realise that significant atmospheric impacts may also result from volcanic halogens. We have already shown these undergo a multi-phase chemistry in the troposphere, resulting in ozon

We aim to investigate the feedbacks between river high-discharge events and earthquake cycle deformation, which are the elementary driving processes linking climate, tectonics and landscapes. This approach is complex and requires deciphering the signature of climatic and tectonic processes (1) from

The objective of the BIO-MAIDO program is to better understand the chemical and biological multiphase mechanisms controlling the formation of secondary organic aerosols (SOA). Uncertainties on the processes of formation and transformation of atmospheric organic aerosols need to be lifted to understa

By being located at the interface between minerals and soil solutions, microbial biofilms are highly reactive buffer zones. In particular, these structures create microenvironments with specific physico-chemical conditions, capable of promoting the formation of biominerals. - This project thus foc

The RadiCal project offers to develop radiolarians as a novel palaeo-proxy for marine silicon cycling by calibrating the silicon stable isotope composition (d30Si) of these organisms to their modern environment. This objective will be achieved by applying an innovative multidisciplinary approach eva

Specific questions addressed by ImMEDIAT include: - Can we detect mesoscale eddies in the ice-covered Arctic using satellite observations? - How do mesoscale features and sea ice influence each other? What are the important processes for this interplay? - Can we provide a basin scale quantificat

The goal of the SHEET-FLOW project is to develop a turbulence resolving two-phase flow model based on new sheet flow laboratory experiments to address the following scientific questions: SQ1. What is the appropriate sub-grid closure for particles drifting with respect to the turbulent velocity f

Over the last decade, many studies have identified nonlinear oceanic and atmospheric processes that appear to play a key role in ENSO asymmetries. There is however currently no consensus on the relative importance of those various oceanic and atmospheric processes in determining the overall ENSO asy

The Western Tropical South Pacific (WTSP) Ocean has recently been identified as a hotspot of N2 fixation and harbors among the highest rates reported in the global ocean. N2-fixing organisms have high iron (Fe) quotas relative to non-diazotrophic plankton and their success in the WTSP has been attri

Africa has been recognized by the IPCC group as one of the most vulnerable region to climate change. Past abrupt climatic and environmental events that have punctuated the recent history of the African provide insights on rapid climate dynamics in the future and are of prime interest to test the abi

A large variety of contaminants (e.g. heavy metals, metalloids, radionuclides, pesticides, hydrocarbons, drugs) are currently found in surface waters, groundwaters, sediments and soils. These contaminants are of special concern given their extensive use and their impact on human health, aquatic life

Given that methane is a potent greenhouse gas, there is a need to define the methane budget associated to fluid systems and to understand the balance between the generation, migration, accumulation of hydrate and the emission of methane at the seafloor. Therefore, ascertaining the fate of methane an

BIIM aims to 1) assess the processes leading to the net dissolution of abiotic particulate iron from sedimentary and hydrothermal origin, and 2) evaluate its impact on marine biogeochemistry. This is a crucial topic, as dissolved iron controls marine biological productivity and carbon sequestration

title: Ridge Factory Slow : Fluid-rock interactions in the context of mantle exhumation at slow spreading ridges. Study of a melt-poor end-member Mid-ocean ridges can be viewed as factories that continuously manufacture new oceanic lithosphere that is then recycled into the mantle at subduction z

Glacier basal sliding largely sets glacier dynamics, and thus the advection of ice towards warmer areas with faster melt. Our lack of knowledge on the physics of basal sliding is such that we are unable to discriminate which physical law to use in large scale models, which causes large uncertainties

LISZT aims at identifying and modelling the thermo-hydro-chemical mechanisms of CO2-metasomatism producing mantle-derived listvenites and at defining criteria for evaluating their potential as sources of rare and critical metals. It brings together 3 French research institutes internationally recogn

During periods of climate changes, ice sheet shrinking is controlled by the collapse of vulnerable ice shelves at the tip of fast-flowing ice streams. Ice stream collapse has not yet been observed and we therefore lack solid historical data and models to predict accurately their consequences, thus l